Drilling mechanism



May 8, 1928. I 1,668,870 T. R. E. RUNDQVIST DRILLING MECHANISM Filed Nov- 21, 1924 2 Sheets-Sheet 1 May 8, 1928.

T. R. E. RUNDQVIST DRILLING MECHANISM 2' Sheets-Sheet 2 Filed NOV. 21, 1924 I I Pl 0m Patented May 8,- 1928.

UNITED STATES {PA-TENT OFFICE.

Tnonn R. E. nonnovrs'r, or CDAREMONT, NEW HAMPSHIRE, assxenon TO sULLIvAN MACHINERY COMPANY, A coarona'non OF MASSACHUSETTS.

DRILLING MECHANISM.

Application filed November 21, 1924. Serial no. 751,237.

osed therein to which is attached a holow drill steel so that upon reciprocation of the cylinder said steel will be reclprocated throu h fluid pressure generated w1th1n the cylinder due to relative movement between the same and the piston. In thls type of mechanism it is sometimesdesirable to rotate the steel independently of reciprocatlon thereof such as when drill bits are removed or secured to the drill rods through a usual threaded connection and it is an ob ect of my invention to provide improved means for accomplishing this function. A further object is to provide improved means whereby the pressure generated within the cylinder during the reciprocation of the drill rod may be relieved. i

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice.

In these drawings,- y

Fig. 1 is an end elevation, partially/1n section, of the drilling mechanism mounted upon a wheeled support.

Fig. 2 is a vertical section through the standard.

Fig. 3 is a sectional view of the actuating piston and cylinder with my improved means for relieving the pressure generated therein.

Fig. 4 is a horizontal section on line 44 of Fig. 2. i

Fig. 5 is a verticalsection on line 5--5 of Fi 4.

liig. 6 is an enlarged detail of the means for preventing reciprocation of the drill steel during rotation thereof.

I have shown my invention embodied in a drillingmechanismof the type disclosed in a copending application of Henry H.

Mercer, Ser. No. 472,546, filed May 25,1921

in view of which it is thought only necessary to briefly describe the same. The mechanism comprises a pair of vertical channel iron standards 1 and 2 mounted upon suit:

able frame work 3 constituting part of a wheeledsupport 5. Sli'dably guided by the standards 1 and 2 is a frame comprising upper and lower heads 6 and 7, respectively, connected and held in spaced relation by suitable spacing rods 8. Mounted upon the upper head is a crank shaft 9 adapted to actuate, asthrough a connecting rod 11, a crosshead 12 slidably supported by a suitable crosshead support 13. Rigidly carried by the crosshead 12 and depending therefrom is a cylinder 14 comprising a lower head 15 and a pair of upper heads 16 and 17 which provide a pressure fluid stora e chamber 18. A piston 19 reciprocab y mounted within the cylinder has a piston rod 20 depending therefrom which extends through and has a splined connection 21 with a hub 22 of a worm wheel 23 rotatably mounted within the head 7.'

The worm wheel constitutes a part ofthe rotation mechanism which will be later described and forms a part ofthe presentinvention. Connected as by a collar 24 to the lower end of the. piston rod is a hollow drill steel 25 to which any suitable type of bit 26 may be threadedly connected. Meshing with the worm wheel is a worm 27 rotatably mounted within the lower head 7 and having a ratchet 28 disposed on the outer end of the worm shaft 29, while a pawl 30 is suitably mounted within an arm 31mounted upon the" shaft '29. The ,free end of said arm is connected to the lower head 15 as by a suitable connecting link32 so that upon positive reciprocation of the cylinder 14 bit 26. The finger 33 when operative is disposed withinan annular recess 36 formed llU rotation may-beh'ad in either direction for the proper screwing or unscrewing of the drill bits on or off the rod 25. g

It is not thought necessary togo into detail as to the particular means for actuating the crank shaft 7 or for raising and lowering the frame carrying the cylinder and piston 14andJ19. As-said means does not enter into the present invention it will suffice to say-that during raising of said frame it is possible; to continuously drive the crank shaft 9' as clearly disclosed in the above mentioned copending application.

'During reciprocation of the cylinder while the steel is held against reciprocation it may bedesired to relieve the pressure which would otherwisebe generated from thecylinder 14. This Z neans comprises suitable valves 36and 37 having communication respectively with the cylinder 14 and the chamber 18, these valves being adapted to be simultaneously actuated as through suitable lever arms 38 andlinks 39 connected to di amet-rically opposite points of a manually controlled lever pivotally'mounted upon the side of the cylinder 14. The exhaust valve mechanism as-described inthe application mentioned above is shown at 41 while inlet valvesare .indioated at 42, thus by proper manipulation ofthe'handle 40, valves 36 and 37 are adapted to relieve the before mentioned pressure which would otherwise be continuously generated due to the continuous reciprocation of the cylinder and operation ofvalves 41 and 42. V

In case it should be desired to pass cleansing fiuid through the hollow steel while the steel is stationary,-the valves 36 and 37 could be closed, inwhich case pressure would be generated and-stored within the chamber 18 from whence it' would passthrough ports 43 disposed within a sleeve 44 extending upwardly from the lowermost portion of the head 16 and into a hollow member 45 extending-upwardly from thepiston 19 and having telescopic engagement with the mem ber- 44 and an associatedpacking member 46.

.The; general Hmode of operationitis thought will-be apparent from the previous descriptiombut to epitomize, the crank shaft 19 iscontinuously operated to continuously reciprocate cylinder 14 and'in normal operation, {also reciprocate the piston 19 and steel as by fluid pressure generated 'within the cylinder and normallytransmitted to chamber- 18 and therefrom througlrthe-hollowsdrillsteel to'the bottom of the hole from which it would blow the cuttings. "WVhen it it desired to remove thendrill bit 26 the frame constitutingheads 6 and 7 would be raised and the handle 34 operated to place tively. reciprocable cylinder an thefinger: 33 in the recess-36 tohold the steel against reciprocation during continued operation of the cylinder 14. This continned"reciprocation of the cylinder would cause continuedrotation ofthe drill steel to the pawl and ratchet mechanism 28 and 30 actuated by the arm 31 operatively connected to thecylinder 14 by the link Should it be desired to relieve the pressure generated within the cylinder, the handle 40'will be rotated to relieve the pressure within-the chamber- 18 and cylinder 14.

While I have in thisapplication "specifically described one form which: my invention rnay assumein practice, it will be understood that this form ofthe same is. shown for purposes of-il'lustr-ation and that the invention may benmodified and' embodied in various other forms without departing from its spirit or the scope or the appendedclaims.

What I claim as new and desire to secure by Letters Patent is: i

,1.- A1 drilling mechanism com rising relapiston elements, means cooperating with one of said elements foreffecting reciprocation of the other of saidelements, a drill rod reciprocable with one of saiduelements,means for rotatingsaid-dril'l mod, and means for holding said element with which said drill rod is reeiprocable against reciprocation while rotation of said drill rod and reciprocation .of theot-her element are continued.

2. Aidrilling mechanism comprising rela tively reciprocable cylinderand piston elements, means cooperating with one of said-elements for-"effecting reciprocation of theother of said elements, adrill rod reciprocable with one of said elements, means for rotating said drill rod, and means for positively holding said element with which said drill rod is reciprocablegagainst reciprocation while rotation of said drill rod and reciprocation of vthe other element are continued.

3. A drilling mechanism comprising a piston, 1 power goperated-means for effecting reciprocation-of said piston including a cylinder, adrill rod reciprocable' with .said piston, means operatively' connected to said power operated means for rotating said; drill rod, and means for holding said. piston against reciprocation while rotation' of-isaid drill rod and reciprocation of said cylinder are continued.

4. A drilling mechanism comprising a piston, means for effecting reciprocation of said piston including a cylinder, a. drill rod reciprocable with said pistommeans.operatively connected to said. cylinders for rotating said'drill rod, and means for holding said piston against reciprocation while rotation of said drill rod .rand reciprocation .ofasaid cylinder are continued.

5. A drilling mechanism comprising a piston, power operated means for effecting reciprocation of said piston including a cylinder, a drill rod reciprocable with said piston, means operatively connected to said power operated means for intermittently rotating said drill rod, and means'for positively hol ding said piston against reciprocation while rotation of said drill rod and reciprocation of said cylinder are continued. I

6. A drilling mechanism comprising a piston, power operated means for effecting reciprocation of said pistonincluding a cylinder, a drill rod reciprocable with said piston, means operatively connected to said cylinder for intermittently rotating said drill rod, and means for positively holding said piston against reciprocation while rotation of said drill rod and reciprocation of said cylinder are continued.

7. A drilling mechanism comprising a piston, power operated means for effecting reciprocation of said piston including a cylinder, a drill rod reciprocable with said piston, means including a ratchet mechanism operatively connected to said cylinder for intermittently rotating said drill rod, and means for positively holding said piston against reciprocation while rotation of said drill rod is continued.

8. Adrilling mechanism comprising a cylinderand a piston therein, means for effecting reciprocation ofs'aid cylinder and piston, a drill rod reciprocablewith said piston, means for rotating said drill rod, and means for holding said piston against reciprocation whilerotation of said drill rod and reciprocation of said cylinder are continued.

9. A drilling mechanism comprising a cylinder and a iston therein, power operated means for e ecting reciprocation of said cylinder and piston, a drill rod reciprocable with said piston, means operatively connected to said power operated means for rotating said drill rod, and means for holding said piston against reciprocation While rotation of said drill rod and reciprocation of said cylinder are continued.

10. A drilling mechanism, comprising a cylinder and a iston therein, power operated means for e ecting reciprocation of said cylinder and piston, a drill rod reciprocable with said piston, means operatively connected to said cylinder for rotating said drill rod, and means for holding said piston against reciprocation while rotation of said drill rod and reciprocation of said cylinder are continued. i

11. A drilling mechanism comprising a cylinder and a piston therein, means for effecting reciprocation of said cylinder and piston, a drill rod reciprocable with said piston, means for rotating said drill rod, and means for positively holding said piston against reciprocation while rotation of said drill rod and reciprocation of said cylinder are continued.

12. A drilling mechanism comprising a piston, poweroperated means for efiecting reciprocation of said piston including a cylinder, a drill rod reciprocable with said piston, means operatively connected to said power operated means for rotating said drill rod, and means for interrupting reciprocation of said piston while rotation of said drill rod and reciprocation of said cylinder are continued.

13. A drilling mechanism comprising a cylinder and a piston therein, means for effecting reciprocation of said cylinder and piston, a drill rod reciprocable with said piston, means operatively connected to said cylinder for intermittently rotating said drill rod, and means for positively holding said piston against reciprocation while rotation of said drill rod and reciprocation of said cylinder are continued.

14. A drilling mechanism comprising a drill rod, means for effecting reciprocation of said drill rod including movable piston and cylinder elements, one of which is adapted to be positively actuated, means for rotating said drill rod independently of the reciprocation of one of said elements, and

means for holding said piston against reciprocation during reciprocation of said cyl inder and rotation of said drill rod.

drill rod, means for reciprocating said drill rod including movable piston and cylinder elements one of which is adapted to be positively actuated, meansoperatively connected-to one of said elements for rotating said drill rod independently of the reciprocation of the other of said elements, and means for holding said piston against reciprocation during reciprocation of said cylinder and rotation of said drill rod.

16. A drilling mechanism comprising a piston, power operated means for effecting reciprocation of said piston including a cylinder, a drill rod reciprocable with said piston, means operatively connected to said power operated means for rotating said piston, said rotating means including gearing operatively connected to said drill rod, and means for holding said piston against reciprocation while rotation of said drill and reciprocation of said cylinder are continued.

17. A drilling' mechanism comprising a piston, non-reversible power operated means for effecting reciprocation of said piston includin a cylinder, a drill rod reciprocable with sai piston, means operatively connectedto said power operated means for rotating said drill rod in opposite directions, and means for holding said piston against reciprocation while rotation of said drill rod in either direction is continued.

18. A drilling mechanism comprising a cylinder anda piston therein, a non-reversible power operated means for effecting 15. A drilling mechanism comprising a reciprocation of isaidcylindereand piston, a drill rodi-iireciprocable "W lth SBlCl piston, meansoperatively connected to saidcylinder for intermittently rotating said drill rod in opposite directions, and' neans lonholding said piston against reciprocation whilerotation of said drillrod in eithcr direction is continued. 7

19. A drilling mecl ianisn'i comprising relatively reciprocable cylinder andv piston eleiments, means cooperating with one of said elements for efi'ecting. reciprocation of said other element, aidrill-steel reciprocable by one of said elements, means ior rotating said drill steel, and-nieans for positively holding said drill steelbagainst reciprocation whilerotationthereof and reciprocation of the other element arecontinued.

20.-A drilling mechanism comprising a vertical standard, a sliding frame having upper and lower heads guided by said standard, a drilling tool, power operated actuating means for said tool comprising reciprocable cylinder and piston members, and gear operated tool rotation means operatively connected to said power operated actuating cylinder and piston, a drill rod reciprocable by said; piston, -said cylinder and, piston being adapted to generate fluid pressure, and =mea-ns .operablerat will and adapted to be set in diiferentpositions for relieving the pressure generated'in theopposite-ends of said cylinder, said means including an adjustable relief .valve constantly in communication with the cylinder bore. a

22.A. drilling mechanism comprising a cylinder and a piston therein,v power operat'ed means "for effecting "reciprocation 10f said cylinder andipiston, a drill rod reciprocable by said piston,.vsaid cylinder andhpistonbeing adapted to generate fiuidipressure,

and means at'opposite endsofthe 'cylinder operable atrwill and adapted .to be set --in i difierent positions for simultaneously relieving the pressure generated in the opposite endsofsaid cylinder.

23. A drilling mechanism comprising relatively reciprocable cylinderand piston1ele- Vnients, means cooperating Witlrone oil said elements for effecting reciprocation. of, the

other of said elements, midi-filing toolzactuated byone 01 said elements, meanswfor cylinder and including an'element reciprocable therewith for rotatingvsaid-drill;-rod, and means for positively liolding:said piston-against reciprocation while rotation of said drill rod is continued.

25. A drilling mechanism comprising-e piston, a power operated: means 1 for effecting reciprocation of said piston including apylinder, a drill rod reciprocable with said -pis ton, means 1 operatively: connected to.- :said power operated means for intermittently rotating said drill rod while said-rpowergoperated means continuously operates-hand 'means for; positively holdingsaid pistxm against reciprocation while rotation roitrieaid drill rod is continued.

, In testimony whereof I affix my signature.

THORE' R. E; RUNDQY-IST.

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